Looking for a module that change color of product

Im building a t shirt store to sell t shirt online and i would like a module that if a customer want to see how the t shirts look in different color could do that. im looking something like the picture. If someone know this is stop me to continue building the website because is an option i really want in my store. Thanks in advance

You could try this free extension

http://www.opencart.com/index.php?route ... n_id=10817

demo at

http://ocextensions.co.uk/oc2031/t-shirts/tshirts